iSonic&reg; Ultrasonic Cleaner # S3800B with 3, 5 and 10-minute timer Ultrasonic cleaner for jewelry, eyewear, denture, retainer, etc. Stainless steel tank. Tank capacity 600 ml (1.3 pint) Timers: 3, 5 and 10 minutes. Frequency: 42,000 KHz. Power: 35W. Unit dimension: 21x14.5x14 cm (8.3"x5.7"x5.5"). Plastic basket, watch stand included.